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"KRS/GT" Technical Q&A K1200RS/GT Technical Questions/Answers

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  #1  
Old 02-05-2018, 12:02 AM
Marzman Marzman is offline
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'04 k1200gt oil leak

Ive recently developed an oil leak which I've highlighted in the pic.
Looking for anyone with experience in the same or similar and input on the fix.
thanks in advance

FullSizeRender.jpg
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  #2  
Old 02-05-2018, 12:15 AM
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Re: '04 k1200gt oil leak

The "fun" begins...time to pull apart & replace the rear seal...MAJOR PITA...
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Old 02-05-2018, 12:43 AM
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Re: '04 k1200gt oil leak

This is what you have going, the 19x4mm oring seal in back of your engine near the main crank seal:
http://www.i-bmw.com/showthread.php?t=38451
I suspect it is a bigger job than you were thinking. It is an old age failure of the oring, not miles. When you replace it use Viton not Buna-N.
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Old 02-05-2018, 04:28 AM
Marzman Marzman is offline
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Re: '04 k1200gt oil leak

Nice detailed thread on your fix, beech. Though for some reason the pics aren't available to view on my phone. 🙁

Unfortunately I lack the space, tools and talent to take this on myself.
If anyone knows a mechanic willing to take this on in or around Sydney, it'd be much appreciated if you could post me their contact details.
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  #5  
Old 02-05-2018, 08:00 AM
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Re: '04 k1200gt oil leak

I was under the impression that the dreaded seal leak manifested itself by oil seeping on the vertical juncture on the bell housing, where oil is not supposed to be.



The red outlines in the OP’s photo are far from that, in an area where oil is supposed to be.

Different problem maybe?
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Old 02-05-2018, 09:43 AM
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Re: '04 k1200gt oil leak

My leak isn't the rear main seal. Correct me if I'm wrong, I think it's called the crankcase seal, which is just a bead of silicon.
But the fix requires the gearbox and clutch to be removed to repair
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Old 02-05-2018, 09:50 AM
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Re: '04 k1200gt oil leak

If the clutch isn't slipping when you give it a handful in top gear, uphill, with a fat lass on pillion and your panniers filled with Fosters, I'd forget it mate.
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Old 02-05-2018, 10:55 AM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by Marzman
My leak isn't the rear main seal. Correct me if I'm wrong, I think it's called the crankcase seal, which is just a bead of silicon.
But the fix requires the gearbox and clutch to be removed to repair

I'm not able to see the leak in your picture. Any chance it's just the crank cover gasket leaking?
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Old 02-05-2018, 12:15 PM
Marzman Marzman is offline
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Re: '04 k1200gt oil leak

Nah. That's where it's coming from. Just before I took that pic, I wiped the seal with a cotton bud looking for oil
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  #10  
Old 02-05-2018, 12:39 PM
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Re: '04 k1200gt oil leak

Yes, I was wondering that last night. I agree with you, information so far indicates it is an oil pan leak. The excellent picture showing the tranny adapter seam with the oil stain is the typical one. You could take note of the weep holes drilled in the adapter case and clutch slave boss, a project if your inclined.
Those pictures are gone. A photo dump site that many people used to use now charges money to display your own pictures in a "third" party site. Totally screwing thousands of posts in various venues. Photobucket is a looser.
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Old 02-07-2018, 10:02 AM
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Re: '04 k1200gt oil leak

Im getting ready to start this project on my RS and I have to say the leak on my bike doesnt look nearly as bad as the ones pictured here.
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  #12  
Old 02-07-2018, 10:08 AM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by Marzman
Ive recently developed an oil leak which I've highlighted in the pic.
Looking for anyone with experience in the same or similar and input on the fix.
thanks in advance

Attachment 28719

Picture back. Visible in first post but requires point and click in my post.
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  #13  
Old 03-15-2018, 09:47 PM
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Re: '04 k1200gt oil leak

I picked up this 98 last summer. I finally got the GS off the lift last weekend so I took off the plastics for some rehab. This bike was clearly neglected for a bit - Oil everywhere. It doesn't look like an output seal. Do these bikes all have external fuel filters?


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Old 03-15-2018, 10:57 PM
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Re: '04 k1200gt oil leak

"Normally" the filter / pump assembly is inside the tank. I relocated the filter to outside the tank on the RS...still in the normal location on the GT.
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  #15  
Old 03-15-2018, 11:34 PM
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Re: '04 k1200gt oil leak

It is probably the engine crankcase breather hose. They crack and make a mess. It lies on top of the engine near the intake manifold. Not that easy to get to. Most replace it when they do the 19x4mm oring that causes the oil leak seen as a wet seam on the right side of the bike between the engine and transmission.
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  #16  
Old 03-16-2018, 11:27 AM
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Re: '04 k1200gt oil leak

OP certainly isn't showing a huge leak at the oil sump.My sump is also seeping.Right behind the water/oil pump so very hard to see.Been like that for years.Never got worse but last winter finally took time and determined exactly where it was seeping.

And staying like that,way too much work fixing that sump seep.I wished I could get rid of all that crappy BMW sealer as it failed in other places that I could fix with much better products but again not worth my time.Heck of a job removing/resealing the sump.
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Old 03-16-2018, 01:07 PM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by Beech
It is probably the engine crankcase breather hose. They crack and make a mess. It lies on top of the engine near the intake manifold. Not that easy to get to. Most replace it when they do the 19x4mm oring that causes the oil leak seen as a wet seam on the right side of the bike between the engine and transmission.

Thats how it was on mine but more visible on the left. God awful mess up on top and just seeped down.
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Old 03-16-2018, 01:57 PM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by Rob955i
Thats how it was on mine but more visible on the left. God awful mess up on top and just seeped down.
thanks for the suggestions. The head side is fairly clean. I'm going to wipe it down and hope it's the fill cap for now. Next winter on the engine leaks, I've got enough to do on it for spring (fluids, fork seals, grips). I bought it to ride; a little oil leak isn't a priority now.
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Old 03-16-2018, 02:23 PM
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Re: '04 k1200gt oil leak

If the breather hose a little crack may not affect engine running behavior.Big cracks or total splits may do that.

Mine never failed.Well greased over the years so was still supple and leak free.Was just showing the tiny beginnings of a crack right next to stub no1 clamp and I sure had to look twice to even notice.

That was at well beyond the milleage where they seem to fail.And from the look of it I had a long way to go still before failure and oily mess.

As per my long time procedure and experience with all sorts of BMW rubber bits not failing on me as they seem to for a lot of others?Red rubber grease.
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Old 03-17-2018, 02:06 PM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by pbegin@burton
If the breather hose a little crack may not affect engine running behavior.Big cracks or total splits may do that.

Mine never failed.Well greased over the years so was still supple and leak free.Was just showing the tiny beginnings of a crack right next to stub no1 clamp and I sure had to look twice to even notice.

That was at well beyond the milleage where they seem to fail.And from the look of it I had a long way to go still before failure and oily mess.

As per my long time procedure and experience with all sorts of BMW rubber bits not failing on me as they seem to for a lot of others?Red rubber grease.


So put a light coating of red rubber grease all over the new vent hose? That will extend the life of it a little ?
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Old 03-18-2018, 10:33 AM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by Rob955i
So put a light coating of red rubber grease all over the new vent hose? That will extend the life of it a little ?

A little?That was a lot in my case.

And....at 240,000 kms I still run with my OEM rubber intake boots.Very nice and supple.

A few years back bought a set of TBs.30,000 milles? Came with a broken hose and unuseable intake boots.Same with the plastic manifolds I had to buy to replace my warped ones?Very straight at 30-40Ks but all the rubber boots were dry and cracked.

No sillycone that would pollute and kill the O2 sensor.Fuel proof and best of all makes re-assembly so much easier.Where else? Swingarm boots,internal brake parts,slave cylinders after inspection to avoid unnecessarily buying new ones...etc...etc...!
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Old 03-19-2018, 09:13 AM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by pbegin@burton
A little?That was a lot in my case.

And....at 240,000 kms I still run with my OEM rubber intake boots.Very nice and supple.

A few years back bought a set of TBs.30,000 milles? Came with a broken hose and unuseable intake boots.Same with the plastic manifolds I had to buy to replace my warped ones?Very straight at 30-40Ks but all the rubber boots were dry and cracked.

No sillycone that would pollute and kill the O2 sensor.Fuel proof and best of all makes re-assembly so much easier.Where else? Swingarm boots,internal brake parts,slave cylinders after inspection to avoid unnecessarily buying new ones...etc...etc...!

Good i'll smear that stuff all over everything then! I did pick up a tub of the stuff and should last me a while. Im familiar with using it in brake applications.
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Old 03-25-2018, 12:25 PM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by bruincounselor
I picked up this 98 last summer. I finally got the GS off the lift last weekend so I took off the plastics for some rehab. This bike was clearly neglected for a bit - Oil everywhere. It doesn't look like an output seal. Do these bikes all have external fuel filters?



Finally got some time this weekend for an oil change. Filter would not budge and wasn't the right one anyway so I killed 2 birds and pulled the sump to get at the filter with a proper removal tool (screwdriver). Someone had put clear silicone all over the filter cover instead of a proper o-ring. R/R the crank cover to reduce that leak too. Red permetex all around. It's now got Mobil's finest on the inside where it will hopefully remain. Did fork seals for good measure. Fuel filter and disconnects along with plugs on the docket.
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Old 03-26-2018, 06:01 PM
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Re: '04 k1200gt oil leak

my 00 KRS had the same problem. The dealer fixed it.
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Old 03-26-2018, 09:03 PM
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Re: '04 k1200gt oil leak

My '00 K12RS had the cracked breather hose Beech referred to. It dumped a bunch (pool) of oil on top of the engine that weeped/spilled over the side and looked just like Fast Eddie's pic above. You would need to remove the tank and possibly air filter box on the RS. $100 for the OEM assy. I believe there are some threads that describe a DIY PVC replacement. I'd go ahead and do the breather tubing now, see if that clears it up.

I'd bet most of these bikes have the same busted breather tube dumping the oil on their engines. A LOT easier fix than "THE O-ring".
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Old 03-28-2018, 10:31 AM
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Re: '04 k1200gt oil leak

Throttle bodies have to come off to replace the hose.Higher milleage(or not) time to send the injectors in for a cleaning.And then inspection of the rubber intake manifolds.And then? Plastic intake stubs reasonnably flat?

There can be visual clues as to intake leaks.Oily blowback residues by the leak(s).But no visible clues if the breather hose has dumped an oily mess all over.

PITA them vacuum leaks....!
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Old 03-28-2018, 11:03 AM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by Rob955i
Good i'll smear that stuff all over everything then! I did pick up a tub of the stuff and should last me a while. Im familiar with using it in brake applications.

Tub? Easily available(and cheap) on fleabayUK in a tub that will probably last me 20yrs.And that's after passing on samples to others.

But I pass on the paperwork with the samples.

http://redrubbergrease.com

Slather...... Clean excesses with Alcohol.



2018-03-28_07-46-17 by Pierre Begin - Flickr2BBcode
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Old 03-28-2018, 12:16 PM
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Re: '04 k1200gt oil leak

I just sent a set for my K bike to this guy. Great job which included new O-rings which alone from BMW would be more than 20$. Total costs was $75. There is more to it than one would think.
http://www.mrinjector.us/?gclid=Cj0K...EaAkqaEALw_wcB
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Old 03-28-2018, 02:02 PM
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Re: '04 k1200gt oil leak

How much are them Orings from BMW again?

MrInjector uses the same machine to clean injectors than my Canadian specialist.If he buys them Viton Orings by the 100s they are about 10 cents each.
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Old 03-28-2018, 02:15 PM
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Re: '04 k1200gt oil leak

09 13 64 7 675 557 O-RING - 8,3X3 4 $5.05
10 13 64 1 437 476 O-RING - 7,52X3,51 4 $5.66

That is one injector so x 4= $43 for a set. The rebuild is $75 so it is a mess of money from BMW. Of course you can buy them bulk (Viton) for much less. It's crazy what BMW is asking for parts. It will hit a limit. Even car dealers are starting to ask each other about the price of new cars these days. Maybe it is BMW's way of forcing owners to think about a new bike rather than fix major problems. I wonder who the demographic members are these days for sales. Certainly not the average younger person.
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Old 03-29-2018, 06:51 PM
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by pbegin@burton
How much are them Orings from BMW again?

MrInjector uses the same machine to clean injectors than my Canadian specialist.If he buys them Viton Orings by the 100s they are about 10 cents each.

Sent my injectors out. just got them back about a week ago, $65 for all 4. He replaced the orings with vitons so if anyone wants to buy a new set that came from BMW let me know.
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  #32  
Old 03-30-2018, 11:54 AM
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pbegin@burton pbegin@burton is online now
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Re: '04 k1200gt oil leak

Quote:
Originally Posted by Rob955i
Sent my injectors out. just got them back about a week ago, $65 for all 4. He replaced the orings with vitons so if anyone wants to buy a new set that came from BMW let me know.

That's cheap.Got a balance sheet with pre and after cleaning specs for that $65.00?

I think the OEM Orings are Viton.Easy to tell.....put on a flat surface and gently tap with a small hammer.Viton thuds......Buna bounces.
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Old 03-30-2018, 08:13 PM
Rob955i Rob955i is offline
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Re: '04 k1200gt oil leak

152245499314314996793.jpg
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  #34  
Old 03-30-2018, 08:20 PM
Rob955i Rob955i is offline
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Re: '04 k1200gt oil leak

There's the data sheet for that $65 cleaning. Ultrasonic cleaned.

Hurst Injector Service
125 East St.
Fitchburg, Ma. 01420
(978)516-9152
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  #35  
Old 03-31-2018, 12:13 PM
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pbegin@burton pbegin@burton is online now
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Re: '04 k1200gt oil leak

Will run better.And should be smoother,they get kind of buzzy in the 4000Rpm range when the balance is off.And can feel a little surgey in the lower RPMs.

Cleaned with the ASNU system.Same as my FI specialist who is also the ASNU distributor.

http://hurstinjectorservice.com

I paid more for sure but got to watch the process.And ask relevant questions. Twice so education can be expensive.

For further checks and to determine if my injectors do need cleaning again I bought an injector pulser.Passed the static pulsed balance test over my winter refit/tuneup so maybe next year when they hit the +50Ks mark?
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Benelli 50cc at 14
Yamaha RD200 at 16
Yamaha RD350 at 17
Honda CB750F at 18
Honda V45 Sabre at 24
85 BMW K100RS at 28 (Very nice and sorely missed)
90 BMW R100GS at 34 (Too slow, too cranky)
2003 K1200 RS at 53 (Oh Yeah......over 6000RPM)
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  #36  
Old 03-31-2018, 06:26 PM
Rob955i Rob955i is offline
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Re: '04 k1200gt oil leak

Was not expecting them to be as bad as they were. Im expecting a great improvement in performance but on the other hand I am the one who is reassembling this bike so it may not ever run again ! Dont know if I could have watched the process, maybe if I delivered them myself but I just didnt and dont have the time. Talked with him at great length over the phone and hes a knowledgeable guy, nice guy. He's from Germany, is a motorcyclist also.
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